JP2009008322A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of equalizing temperature distribution of a storage chamber. <P>SOLUTION: The refrigerator is provided with the storage chamber 3 for cooling and storing stored objects, a cooler 5 for generating cool air, first and second cooled air passages 21, 22 arranged side by side by extending along a back surface of the storage chamber 3 vertically, an inflow port 21b arranged on one side longitudinally, opening on the first cool air passage 21, for flowing the cool air generated by the cooler 5, a connecting passage 20a extending longitudinally for connecting the first and second cool air passages 21, 22, and a discharge port 20b arranged on the first and second cool air passages 21, 22 for discharging the cool air to the storage chamber 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a refrigerator provided with a cold air passage for discharging cold air generated by a cooler to a storage room.

  A conventional refrigerator is disclosed in Patent Document 1. 7 and 8 are a front sectional view and a side sectional view showing a schematic configuration of the refrigerator. The refrigerator 1 is provided with a freezer compartment 2 at the top, and a refrigerator compartment 3 below the freezer compartment 2. The freezer compartment 2 and the refrigerator compartment 3 are partitioned by a partition wall 4 filled with a heat insulating material. The front surface of the freezer compartment 2 is opened and closed by a door 2a, and the front surface of the refrigerator compartment 3 is opened and closed by a door 3a.

  A cooler 5 that generates cool air is disposed on the back of the freezer compartment 2, and a blower fan 6 is disposed above the cooler 5. The cooler 5 and the blower fan 6 are arranged in a freezer compartment duct (not shown) provided on the back surface of the freezer compartment 2. The freezer duct is provided with a return port (not shown) that opens toward the freezer 3 below the cooler 5.

  A communication passage 7 connected to the exhaust side of the blower fan 6 is provided on the side of the cooler 5. A discharge passage 8 that communicates with the communication passage 7 extends in the vertical direction at a central portion in the left-right direction on the back surface of the refrigerator compartment 3. Discharge ports 8 a for discharging cool air are opened on both sides of the discharge passage 8. In the partition wall 4, a return passage 9 having a return port 9 a that opens at the front of the refrigerator compartment 3 is provided. The return passage 9 is connected to the freezer compartment duct of the freezer compartment 3 below the cooler 5.

  In the refrigerator 1 having the above configuration, the cold air generated by exchanging heat with the cooler 5 is discharged into the freezer compartment 2 as indicated by an arrow D 1 by driving the blower fan 6. The cold air discharged into the freezer compartment 2 flows through the freezer compartment 2 to cool the stored items, and returns to the cooler 5 through the return port of the freezer compartment duct.

  The cold air flowing through the freezer compartment duct branches on the exhaust side of the blower fan 6 and flows through the communication passage 7 and the discharge passage 8 as indicated by the arrow D2. The cold air flowing through the discharge passage 8 is discharged from the discharge port 8a into the refrigerator compartment 3 as indicated by an arrow D3. The cold air discharged into the refrigerator compartment 3 flows through the refrigerator compartment 3 to cool the stored items, and flows into the return passage 9 from the return port 9a at the front portion of the refrigerator compartment 3 as indicated by an arrow D4. The cold air flowing through the return passage 9 returns to the cooler 5 through the freezer compartment duct of the freezer compartment 3 as indicated by an arrow D5.

Japanese Patent No. 3892814 (pages 4-8, FIG. 1)

  However, according to the conventional refrigerator 1, since the discharge ports 8a are provided on both sides of the discharge passage 8, the distance from the discharge port 8a to the side wall of the refrigerator compartment 3 increases as the width of the refrigerator increases. For this reason, there was a problem that the cold distribution did not reach every corner of the refrigerator compartment 3 and the temperature distribution became non-uniform.

  An object of this invention is to provide the refrigerator which can make the temperature distribution of a storage room uniform.

  In order to achieve the above object, the present invention provides a storage room for storing stored items in a cold state, a cooler for generating cold air, and first and second cold air passages that extend vertically on the back of the storage room, A connecting passage that extends in the left-right direction and connects the first and second cold air passages, and a discharge port provided in the first and second cold air passages, and cool air generated by the cooler from one side in the left-right direction. It is characterized in that it flows into the connecting passage and is discharged from the discharge port into the storage chamber.

  According to this configuration, the cold air generated by the cooler flows into the first cold air passage or the second cold air passage disposed on the back surface of the storage chamber. Part of the cold air that has flowed into one of the first and second cold air passages flows into the connecting passage from one of the left and right sides, and flows into the other of the first and second cold air passages. The cold air flows downward through the first and second cold air passages and is discharged into the storage chamber from the discharge ports provided in the first and second cold air passages.

  In the refrigerator having the above-described configuration, the discharge port may be further provided in an upper portion of the connection passage, and the first guide portion may be disposed in a lower portion of the connection passage and may guide cold air to the upper portion of the connection passage; And a second guide portion for guiding the cold air flowing through the connection passage to a front portion of the connection passage.

  According to this configuration, the cold air flowing through the connection passage is guided upward by the first guide portion and guided to the front side by the second guide portion. As a result, cold air is discharged into the storage chamber from the discharge port provided in the upper part of the connection passage.

  In the refrigerator having the above-described configuration, the present invention further includes an inflow port for allowing the cold air generated by the cooler to flow into one of the first and second cold air passages, and is arranged below the inflow port to be connected to the connection passage. It is characterized by having a third guide part for guiding cold air. According to this configuration, the cold air that has flowed into the first cold air passage or the second cold air passage from the inflow port is guided in the direction of the connecting passage extending in the left and right directions by the third guide portion.

  In the refrigerator having the above-described configuration, the first cold air passage or the second cold air passage has a bent portion that is bent at an upper portion in the left-right direction and arranged at substantially the same height as the connection passage. Is provided at the upper portion of the bent portion, and the third guide portion is formed by the bottom surface of the bent portion.

  Moreover, the present invention is characterized in that in the refrigerator configured as described above, the cooler is disposed above the connection passage. According to this configuration, the cool air after heat exchange with the cooler flows into the first cool air passage through the side of the cooler.

  In the refrigerator having the above-described configuration, the present invention is characterized in that a return passage for returning cool air to the cooler is provided behind the connection passage. According to this configuration, the cold air flowing through the storage chamber flows into the return passage and returns to the cooler through the rear of the connection passage.

  Moreover, the present invention is characterized in that the return passage is arranged between the first and second cold air passages arranged side by side in the refrigerator having the above-described configuration.

  According to the present invention, the connecting passage extending in the left and right direction and connecting the first and second cold air passages provided on the back surface of the storage chamber is provided, and cold air flows into the connecting passage from one side in the left and right direction. Even if the width of the chamber becomes wider, it is possible to keep cool air from the outlet to every corner of the storage chamber. Therefore, the temperature distribution in the storage chamber can be made uniform.

  According to the present invention, since the first and second guide portions for guiding the cool air are provided at the upper portion and the front portion of the connecting passage by disposing the discharge port at the upper portion of the connecting passage, the width of the connecting passage in the vertical direction is widened. can do. As a result, the discharge port can be arranged on the upper part of the storage chamber to improve the cooling efficiency in the storage chamber, and the distribution area of the cold air can be secured widely to reduce the distribution resistance and to improve the blowing efficiency. In particular, when a return passage or the like is arranged behind the connecting passage and the depth of the connecting passage cannot be increased, a wide distribution area can be easily secured.

  Further, according to the present invention, the first and second cold air is provided with the third guide portion arranged below the inflow port through which the cold air flows into the first cold air passage or the second cold air passage and guiding the cold air to the connection passage. It is possible to make the temperature distribution in the storage chamber uniform by circulating cool air evenly in the passage.

  In addition, according to the present invention, the inflow port can be arranged on the upper part of the bent portion obtained by bending the first cold air passage or the second cold air passage, and the third guide portion can be easily formed by the bottom surface of the bent portion.

  Further, according to the present invention, since the cooler is disposed above the connection passage, heat exchange with the cooler is performed, and the cool air passing through the side of the cooler is easily allowed to flow into the first cold air passage arranged in an uneven manner. Can do. Therefore, cold air can flow through the first and second cold air passages by the connecting passage, and the temperature distribution in the storage chamber can be made uniform easily.

  According to the present invention, since the return passage for returning the cool air to the cooler is provided behind the connection passage, the return passage can be formed at a short distance without detouring. Therefore, the flow resistance of the return passage can be reduced and the blowing efficiency can be improved.

  Further, according to the present invention, since the return passage is disposed between the first and second cold air passages, it is not necessary to provide a return passage on the partition wall with the other storage chamber, and the thickness of the partition wall can be reduced. Therefore, the volumetric efficiency of the refrigerator can be improved.

  Embodiments of the present invention will be described below with reference to the drawings. For convenience of explanation, the same reference numerals are given to the same parts as those in the conventional example shown in FIGS. 1 and 2 are a side sectional view and a front sectional view showing a refrigerator according to one embodiment. The refrigerator 1 is provided with a freezer compartment 2 at the top, and a refrigerator compartment 3 (storage compartment) is provided below the freezer compartment 2. The freezer compartment 2 and the refrigerator compartment 3 are partitioned by a partition wall 4 filled with a heat insulating material. The front surface of the freezer compartment 2 is opened and closed by a door 2a, and the front surface of the refrigerator compartment 3 is opened and closed by a door 3a.

  A freezer compartment duct 10 is provided on the back of the freezer compartment 2. A discharge port 10a is provided in the upper part on the front side of the freezer compartment duct 10, and a return port 10b is provided in the lower part. A cooler 5 that generates cool air is disposed in the freezer compartment duct 10, and a blower fan 6 is disposed above the cooler 5. Below the cooler 5, a drain pan 11 that collects defrosted water from the cooler 5 is provided. Further, the freezer compartment duct 10 has a communication passage 7 that branches off on the exhaust side of the blower fan 6 and is arranged on the right side of the cooler 5.

  A low-temperature case 18 capable of low-temperature storage such as a chilled temperature zone is disposed at the upper part of the refrigerator compartment 3. The back surface of the low-temperature case 18 is opened, and cold air flows from a discharge port 20c described later. Below the low-temperature case 18, a plurality of mounting shelves 13 that are formed of resin molded products and on which stored items are placed are provided. The mounting shelf 13 is placed on the upper surface of a plurality of rails 13a projecting from the side wall of the refrigerator compartment 3, and the position in the height direction can be changed in time according to the stored item.

  A vegetable room 16 comprising an isolation room is provided at the lower part of the refrigerator compartment 3. The vegetable compartment 16 is partitioned from the upper part of the refrigerator compartment 3 by a plate-shaped partition 14 formed of a resin molded product. The upper and lower sides of the partition part 14 communicate with each other through a communication part 14 a in front of the partition part 14. An opening 14 b is provided at the rear end of the partition 14. In the vegetable compartment 16, a storage case 15 whose upper surface is closed by the partition 14 is arranged to be freely put in and out. The storage case 15 is arranged with a gap 16 a through which cold air flows between the wall of the vegetable compartment 16.

  A discharge passage 20 and a return passage 23 extending in the vertical direction are arranged in parallel on the rear surface of the refrigerator compartment 3. FIG. 3 shows a cross-sectional view taken along the line AA of FIG. The discharge passage 20 and the return passage 23 are formed by attaching a duct 26 formed of a heat insulating material of a foamed resin molded product having a plurality of passages to the back wall of the refrigerator compartment 3. Thereby, the discharge passage 20 and the return passage 23 are integrally formed, and the number of parts can be reduced.

  The passages of the duct 26 are separated by a heat insulating material. For this reason, even if there is a temperature difference between the cold air flowing through the discharge passage 20 and the cold air flowing through the return passage 23, the amount of cold heat transferred between them becomes minute. For this reason, it is possible to prevent the cooling efficiency of the refrigerator compartment 3 from being lowered due to the cold heat of the cold air flowing through the discharge passage 20 being transmitted to the cold air flowing through the return passage 23.

  The front side of the duct 26 is covered with a panel 27 made of a resin molded product. The duct 26 and the panel 27 are integrally formed by engaging a concave portion and a convex portion provided respectively, and are detachably attached to the back surface of the refrigerator compartment 3.

  In FIG. 2, the discharge passage 20 has first and second cold air passages 21 and 22 that extend vertically and are arranged in parallel. The first and second cold air passages 21 and 22 are connected to each other by a connecting passage 20 a that extends in the left and right directions at the upper part, and are branched to the left and right of the return passage 23. A plurality of discharge ports 20 b for discharging cool air are provided on the right side surface of the first cold air passage 21 and the left side surface of the second cold air passage 22, respectively.

  The first cold air passage 21 that is arranged to be deviated to the right of the back surface of the refrigerator compartment 3 is bent at an upper portion in an L shape to form a bent portion 21a. The bent portion 21a is formed on the extension of the connecting passage 20a. An inlet 21b through which cold air flows from the communication path 7 is provided at the upper part of the bent portion 21a. As shown in the side sectional view of FIG. 4, a damper 17 that varies the amount of cool air is provided at the inlet 21 b. Accordingly, the discharge passage 20 communicates with the communication passage 7 via the damper 17.

  The cold air flowing into the first cold air passage 21 from the inflow port 21b is guided in the direction of the connection passage 20a by the bottom surface 33 (third guide portion) of the bent portion 21a. The lower right corner of the bent portion 21a is formed into a curved surface, and cool air can be smoothly guided in the direction of the connecting passage 20a.

  A discharge port 20c facing the low temperature case 18 (see FIG. 1) is formed in the upper part of the connecting passage 20a. A rib 30 having a first guide portion 31 made of an inclined surface protrudes from the lower portion of the connecting passage 20a. The first guide portion 31 is formed facing the upper side and the first cold air passage 21 side. Below the first guide portion 31, a vertical contact surface 30a that faces the bent portion 21a is provided.

  FIG. 5 shows a cross-sectional view taken along the line BB of FIG. The return passage 23 has first and second branch passages 24 and 25 that branch left and right at the top. A drain pipe 12 led out from the drain pan 11 is disposed between the first and second branch paths 24 and 25. The connecting passage 20 a is disposed on the front side of the first and second branch paths 24 and 25. The duct 26 covering the drain pipe 12 is provided with a second guide portion 32 having an inclined surface facing the front and the first cold air passage 21 side.

  A part of the cool air guided in the direction of the connecting passage 20 a by the bottom surface 33 of the bent portion 21 a flows down the first cool air passage 21. Further, a part of the cool air comes into contact with the contact surface 30 a and is guided to the first cool air passage 21. The cold air that has flowed into the connection passage 20a is guided to the upper front portion of the connection passage 20a by the first and second guide portions 31 and 32, and is guided to the discharge port 20c.

  The position of the contact surface 30a may be arranged away from the first cold air passage 21 on the downstream side of the connection passage 20a (leftward in FIG. 2). At this time, the same effect as described above can be obtained by adjusting the height of the contact surface 30a. The contact surface 30a may not be a vertical surface, but may be an inclined surface or a curved surface. For example, the upper end of the contact surface 30a may protrude toward the first cold air passage 21, and the contact surface 30a may be formed as a curved surface or an inclined surface facing downward.

  Moreover, although the downstream surface of the rib 30 is a vertical surface, it may be a curved surface or an inclined surface. Thereby, the vortex | eddy_current of the cold air which passed the rib 30 can be prevented, and reduction of distribution resistance and noise can be aimed at. In addition, the rib 30 is provided on the bottom surface of the connecting passage 20a to form the first guide portion 31 and the contact surface 30a. However, the first guide portion 31 and the contact surface are continuously provided on the wall surface of the return passage 23. A wall surface of the surface 30a may be formed.

  Alternatively, the flow rate of the first and second cold air passages 21 and 22 may be adjusted by extending the bottom surface 33 of the bent portion 21a toward the rib 30 to reduce the flow area of the first cold air passage 21. The flow passage area of the first cold air passage 21 may be reduced by extending the bottom surface of the connection passage 20a toward the first cold air passage 21 side.

  FIG. 6 is a side sectional view showing a section passing through the return passage 23. The first and second branch paths 24 and 25 are disposed on the back side of the freezer compartment duct 10. The freezer compartment duct 10 and the first and second branch passages 24 and 25 communicate with each other through communication ports 24a and 25a opened to the back side of the freezer compartment duct 10 below the cooler 5.

  The return passage 23 is provided with a return port 23a that opens to the front at the lower end of the panel 27 that covers the front side. Further, the return passage 23 has an open bottom surface, and a return port 23b facing the opening 14b (see FIG. 1) is formed. The return ports 23a and 23b are arranged above the partition portion 14 (see FIG. 1).

  A receiving portion 12 a of the drain pipe 12 is disposed below the drain port 11 a of the drain pan 11. As shown in FIG. 6, the receiving portion 12 a is disposed in front of the first and second branch paths 24 and 25. The drain pipe 12 extends rearward from the receiving portion 12a through the first and second branch paths 24 and 25, and is disposed behind the return passage 23 and extends downward. The defrost water collected in the drain pan 11 is drained to an evaporating dish (not shown) through the drain pipe 12. Therefore, the return passage 23 branches into the first and second branch passages 24 and 25 and the flow passage area is not reduced, and interference between the return passage 23 and the drainage pipe 12 can be easily prevented.

  In the refrigerator 1 having the above-described configuration, air flowing through the freezer compartment duct 10 is driven by the blower fan 6 to exchange heat with the cooler 5 to generate cold air. The cool air generated by the cooler 5 is discharged into the freezer compartment 2 from the discharge port 10a as indicated by an arrow E1 (see FIG. 1). The cold air discharged into the freezer compartment 2 flows through the freezer compartment 2 to cool the stored items, and returns to the cooler 5 through the return port 10b.

  Further, the cold air is branched on the exhaust side of the blower fan 6 as shown by an arrow E <b> 2 (see FIGS. 2 and 4) and flows through the communication path 7. The cold air flowing down the communication passage 7 flows into the first cold air passage 21 via the inlet 21b opened by the damper 17, and abuts against the bottom surface 33 of the bent portion 21a to change the direction in the direction of the connection passage 20a. The cold air flows downward through the L-shaped first cold air passage 21 from the bent portion 21a and is brought into contact with the contact surface 30a of the rib 30 and guided downward. Thereby, the cold air flows down through the first cold air passage 21 as indicated by an arrow E5 (see FIGS. 2 and 4).

  The cold air contacting the first guide portion 31 of the rib 30 is guided upward, and a part thereof is discharged into the low temperature case 18 through the discharge port 20c as shown by an arrow E3 (see FIG. 1). At this time, the cool air is guided forward by the second guide portion 32, and the cool air can be easily discharged from the discharge port 20c. The cold air flowing further leftward through the connecting passage 20a flows down through the second cold passage 22 as shown by an arrow E4 (see FIGS. 2 and 4).

  The low temperature case 18 is maintained at a low temperature because a large amount of cold air that has passed through the damper 17 is immediately supplied. The cold air flowing through the low temperature case 18 flows out into the refrigerating chamber 3 mainly from the front side of the low temperature case 18. If the first guide portion 31 is formed high to increase the forward protrusion amount of the second guide portion 32 and the discharge port 20c is widened, the amount of cold air from the discharge port 20c increases. Thereby, the low temperature case 18 can be maintained at a lower temperature. Further, the amount of cold air in the first and second cold air passages 21 and 22 can be made equal by adjusting the flow passage area of the cold air flowing into the connection passage 20a by the first guide portion 31.

  The cold air in the low-temperature case 18 and the cold heat of the stored items are released downward from the lower surface of the low-temperature case 18. The stored items arranged below the low temperature case 18 are directly cooled by the cool air sent to the front of the low temperature case 18 and indirectly cooled by the cold heat released from the lower surface side of the low temperature case 18.

  Thereby, the lower part of the refrigerator compartment 3 can be sufficiently cooled even if the amount of cold air discharged from the discharge port 20b described later is reduced. In particular, the amount of cold air discharged from the lower discharge port 20b can be suppressed. Therefore, it becomes possible to suppress the drying of the stored product as much as possible by the cold air directly hitting the stored product.

  The cold air flowing down the first and second cold air passages 21 and 22 is discharged into the refrigerating chamber 3 from the discharge port 20b as shown by an arrow E6 (see FIGS. 1 to 4). At this time, since the discharge port 20b is provided on the side surfaces of the first and second cold air passages 21, 22, the discharge port 20b is discharged toward the side as shown in FIGS.

  The cool air discharged into the refrigerator compartment 3 flows forward along the mounting shelf 13 as shown by an arrow E7 (see FIGS. 1 and 4). Since a plurality of discharge ports 20b are provided in the vertical direction, the stored items at each stage partitioned by the plurality of mounting shelves 13 can be easily cooled. In addition, in the case of a stored item at a stage where the discharge port 20 b is not provided, the stored item is indirectly cooled via the mounting shelf 13 by the cold air flowing along the upper and lower mounting shelves 13.

  The cold air flowing along the mounting shelf 13 descends in front of the mounting shelf 13 as indicated by an arrow E8 (see FIGS. 1 and 4). A part of the cool air descending the front part of the refrigerator compartment 3 circulates on the partition 14 as shown by an arrow E9 (see FIG. 1) and flows into the return passage 23 through the return port 23a on the front side.

  Further, a part of the cold air descending the front part of the refrigerator compartment 3 flows into the vegetable compartment 16 via the communication part 14 a in front of the partition part 14. The cold air that has flowed into the vegetable compartment 16 circulates in the gap 16a around the storage case 15 as shown by an arrow E10 (see FIG. 1). The gap 16 a is also provided on the side of the storage case 15.

  The cool air flowing around the storage case 15 is guided to the upper part of the partition part 14 through the rear opening 14b and flows into the return passage 23 through the return port 23b on the lower surface side. In the storage case 15, the stored items inside are indirectly cooled by the cool air (E 9) that flows along the partition 14 that closes the upper surface and the cool air (E 10) that flows through the surrounding gap 16 a.

  The cold air that has flowed into the return passage 23 rises as shown by an arrow E11 (see FIGS. 2 and 6). The cool air rising in the return passage 23 branches to the first and second branch paths 24 and 25 as indicated by arrows E12 and E13 (see FIGS. 2 and 6). The cold air flowing through the first and second branch passages 24 and 25 flows into the freezer compartment duct 10 through the communication ports 24a and 25a and returns to the cooler 5.

  Since the cool air is returned to the cooler 5 through the communication ports 24a and 25a provided on the left and right, the amount of cool air returning to the cooler 5 can be adjusted by appropriately forming the opening areas of the communication ports 24a and 25a. Thereby, the state with the frost of the cooler 5 can be adjusted easily, and frost can be made to adhere uniformly in the left-right direction.

  Accordingly, the efficiency of defrosting can be improved, and power saving can be achieved by shortening the defrosting time. This effect is particularly great when the width of the cooler 5 in the left-right direction is large. For this reason, when the width | variety of the left-right direction of the cooler 5 is enlarged, the heat exchange amount of the cooler 5 can be increased, the cooling efficiency can be improved, and the power consumption during defrosting can be suppressed.

  According to the present embodiment, the connecting passage 20a extending in the left and right direction and connecting the first and second cold air passages 21 and 22 provided on the back of the refrigerator compartment 3 is provided, and the connecting passage 20a is connected from one side in the left-right direction. Since the cold air flows in, the cold air can reach the corners of the refrigerator compartment 3 from the discharge port 20b even if the width of the refrigerator compartment 3 is widened. Therefore, the temperature distribution in the refrigerator compartment 3 can be made uniform. In addition, instead of the inlet 21 b of the first cold air passage 21, an inlet may be formed in the second cold air passage 22.

  In addition, since the discharge port 20c is arranged at the upper part of the connecting passage 20a and the first and second guide portions 31 and 32 for guiding the cold air are provided at the upper part and the front part of the connecting passage 20a, the vertical direction of the connecting passage 20a is provided. The width can be increased. Accordingly, it is possible to improve the cooling efficiency in the refrigerator compartment 3 by arranging the discharge port 20c in the upper part of the refrigerator compartment 3, and to ensure a wide circulation area of the cold air to reduce the circulation resistance and to improve the blowing efficiency. it can. In particular, when the first and second branch passages 24 and 25 are arranged behind the connection passage 20a and the depth of the connection passage 20a cannot be increased, a wide distribution area can be easily secured.

  Further, since the cold air is guided to the connection passage 20a by the bottom surface 33 (third guide portion) of the bent portion 21a provided below the inlet 21b of the first cold air passage 21, the first and second cold air passages 21 and 22 are guided to the first and second cold air passages 21 and 22. The cold air can be evenly circulated to make the temperature distribution in the refrigerator compartment 3 more uniform.

  In addition, since the cooler 5 is disposed above the connecting passage 20a, the first cool air that is exchanged heat with the cooler 5 and passes through the communication passage 7 on the side of the cooler 5 is biased to the right. It is possible to easily flow into the passage 21. Therefore, cold air can flow through the first and second cold air passages 21 and 22 by the connecting passage 20a, and the temperature distribution in the refrigerator compartment 3 can be made uniform easily.

  Further, since the first and second branch passages 24 and 25 of the return passage 23 for returning the cool air to the cooler 5 are provided at the rear of the connection passage 20a, the return passage 23 can be formed at a short distance without detouring. . Therefore, the flow resistance of the return passage 23 can be reduced and the blowing efficiency can be improved.

  Further, since the return passage 23 is disposed between the first and second cool air passages 21 and 22, it is not necessary to provide the return passage 23 on the partition wall with other storage chambers, and the thickness of the partition wall can be reduced. . Therefore, the volumetric efficiency of the refrigerator 1 can be improved.

  Further, the first and second cold air passages 21 and 22 are disposed on both sides of the return passage 23, the return port 23a is disposed at the lower part, and the discharge port 20b is a side surface of the upper first and second cold air passages 21 and 22. Therefore, the cold air discharged to the side of the refrigerator compartment 3 descends and returns to the return port 23a in the substantially central portion. Therefore, cold air circulates in the refrigerating chamber 3 to prevent a short circuit and improve the cooling efficiency, and to make the temperature in the refrigerating chamber 3 uniform. The discharge port 20b may be formed toward the front as long as the discharge port 20b is disposed on a side portion away from the return passage 23.

  It is more preferable that the return ports 23a and 23b and the discharge port 20b are partitioned by the mounting shelf 13. Thereby, the short circuit of the cool air discharged from the discharge port 20b can be prevented more reliably. Therefore, the cooling efficiency can be further improved and the temperature in the refrigerator compartment 3 can be made more uniform. Thereby, even if the discharge passage 20 and the return passage 23 are provided on the rear surface, the thickness of the partition wall 4 is reduced, and the volume of the refrigerator compartment 3 is increased, the refrigerator 1 with good cooling efficiency can be obtained.

  In addition, a storage case 15 whose upper surface is closed by a partition 14 that partitions the vegetable compartment 16 is arranged in the vegetable compartment 16 with a gap 16a around it, and is partitioned on the front side away from the rear side where the return passage 23 is arranged. Since the upper and lower portions of the portion 14 communicate with each other and the cool air flows around the storage case 15 and is guided to the return port 23b, the stored item in the storage case 15 can be indirectly cooled to prevent the stored item from drying.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the refrigerator provided with the cold air | gas channel | path which discharges the cold air | gas produced | generated with the cooler to a storage chamber.

Side surface sectional drawing which shows the refrigerator of embodiment of this invention Front sectional drawing which shows the refrigerator of embodiment of this invention AA sectional view of FIG. Side surface sectional drawing which shows the cross section which passes along the discharge passage of the refrigerator of embodiment of this invention BB sectional view of FIG. Side surface sectional drawing which shows the cross section which passes along the return channel | path of the refrigerator of embodiment of this invention Front sectional view showing a conventional refrigerator Side sectional view showing a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Freezing room 3 Refrigerating room 4 Partition wall 5 Cooler 6 Blower fan 7 Communication path 8, 20 Discharge path 8a, 20b, 20c Discharge port 9, 23 Return path 9a, 23a, 23b Return port 10 Freezer chamber duct 11 Drain pan DESCRIPTION OF SYMBOLS 12 Drain pipe 13 Mounting shelf 14 Partition part 14b Opening part 15 Storage case 16 Vegetable room 17 Damper 18 Low temperature case 21 1st cold air path 21a Bending part 21b Inflow port 22 2nd cold air path 24 1st branch path 25 2nd branch path 26 Duct 27 Panel 30 Rib 31 First Guide Part 32 Second Guide Part 33 Bottom (Third Guide Part)

Claims (7)

  A storage chamber for storing the stored product in a cold state, a cooler for generating cold air, first and second cold air passages extending vertically on the back of the storage chamber, and first and second cold air extending in the left-right direction. And a discharge passage provided in the first and second cool air passages. The cool air generated by the cooler is caused to flow into the connection passage from one side in the left-right direction, and A refrigerator characterized by being discharged into a storage room.   The discharge port is further provided in the upper part of the connecting passage, and is disposed in the lower part of the connecting passage and guides the cool air to the upper part of the connecting passage, and the cool air flowing through the connecting passage is connected to the connecting passage. The refrigerator according to claim 1, further comprising a second guide portion that guides the front portion of the refrigerator.   An inlet that allows the cool air generated by the cooler to flow into one of the first and second cool air passages, and a third guide that is arranged below the inlet and guides the cool air to the connection passage. The refrigerator according to claim 2.   The first cold air passage or the second cold air passage has a bent portion that is bent at an upper portion in the left-right direction and arranged at substantially the same height as the connecting passage, and the inflow port is provided at an upper portion of the bent portion, The refrigerator according to claim 3, wherein the third guide portion is formed by a bottom surface of the bent portion.   The refrigerator according to any one of claims 1 to 4, wherein the cooler is disposed above the connection passage.   The refrigerator according to claim 5, wherein a return passage for returning cool air to the cooler is provided behind the connection passage.   The refrigerator according to claim 6, wherein the return passage is disposed between the first and second cold air passages arranged side by side.

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